id:A027819 - OEIS Search Results

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7*(n+1)*C(n+6,7)/2.

+0
2

7, 84, 504, 2100, 6930, 19404, 48048, 108108, 225225, 440440, 816816, 1447992, 2469012, 4069800, 6511680, 10147368, 15444891, 23015916, 33649000, 48348300, 68378310, 95315220, 131105520, 178132500, 239291325, 318073392 (list; graph; listen)

	OFFSET	`0,1`
	FORMULA	`Number of 14-subsequences of [ 1, n ] with just 6 contiguous pairs; g.f. 7(1+3x)/(1-x)^9` `C(n+2, 2)C(n+7, 6) - Zerinvary Lajos (zlaja(AT)freemail.hu), May 26 2005`
	CROSSREFS	`Equals 7*A052181(n).` `Sequence in context: A075137 A099668 A053128 this_sequence A099674 A067413 A166178` `Adjacent sequences: A027816 A027817 A027818 this_sequence A027820 A027821 A027822`
	KEYWORD	`nonn`
	AUTHOR	`thi ngoc dinh (via rkg(AT)cpsc.ucalgary.ca)`

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Last modified December 10 00:48 EST 2009. Contains 170565 sequences.

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